Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
Advanced Micro Devices
AMD
|
+$17.7M |
| 2 |
iShares MSCI EAFE ETF
EFA
|
+$10.1M |
| 3 |
NIO
NIO
|
+$7.66M |
| 4 |
Alibaba
BABA
|
+$7.54M |
| 5 |
Micron Technology
MU
|
+$6.73M |
Top Sells
| 1 |
NVIDIA
NVDA
|
+$101M |
| 2 |
SPDR Gold Trust
GLD
|
+$15.2M |
| 3 |
Amazon
AMZN
|
+$9.5M |
| 4 |
SPDR S&P 500 ETF Trust
SPY
|
+$8.76M |
| 5 |
Technology Select Sector SPDR Fund
XLK
|
+$7.41M |
Sector Composition
| 1 | Technology | 18.66% |
| 2 | Consumer Discretionary | 14.99% |
| 3 | Communication Services | 10.06% |
| 4 | Healthcare | 9.68% |
| 5 | Financials | 9.59% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1001
Dover
DOV
$24.1B
| $362K | ﹤0.01% |
2,399
| – | – |
|
1002
VanEck Low Carbon Energy ETF
SMOG
$123M
| $361K | ﹤0.01% |
2,242
-100
| -4% | -$16.1K |
|
1003
Krystal Biotech
KRYS
$3.98B
| $360K | ﹤0.01% |
5,025
-500
| -9% | -$35.8K |
|
1004
ProShares Trust UltraShort Lehman 7-10 Year Treasury
PST
$13.2M
| $360K | ﹤0.01% |
21,990
| – | – |
|
|
WPRT
1005
Westport Fuel Systems
WPRT
$40.9M
| $360K | ﹤0.01% |
6,869
+1,446
| +27% | +$75.8K |
|
1006
McEwen Inc.
MUX
$742M
| $359K | ﹤0.01% |
26,402
| – | – |
|
|
ZY
1007
DELISTED
Zymergen Inc. Common Stock
ZY
| $359K | ﹤0.01% |
8,934
-900
| -9% | -$36.2K |
|
|
VLRS
1008
Controladora Vuela Compañía de Aviación
VLRS
$712M
| $358K | ﹤0.01% |
18,129
| – | – |
|
|
VWE
1009
DELISTED
Vintage Wine Estates, Inc. Common Stock
VWE
| $358K | ﹤0.01% |
30,219
-100
| -0.3% | -$1.19K |
|
|
HGEN
1010
DELISTED
HUMANIGEN, INC.
HGEN
| $357K | ﹤0.01% |
20,939
+800
| +4% | +$13.6K |
|
|
CAN
1011
Canaan Creative
CAN
$354M
| $356K | ﹤0.01% |
46,842
-12,100
| -21% | -$92K |
|
1012
Citi Trends
CTRN
$286M
| $355K | ﹤0.01% |
3,904
+1,100
| +39% | +$100K |
|
|
AIV
1013
Aimco
AIV
$1.07B
| $354K | ﹤0.01% |
52,259
+14,774
| +39% | +$100K |
|
|
RDUS
1014
DELISTED
Radius Recycling
RDUS
| $354K | ﹤0.01% |
7,184
+1,503
| +26% | +$74.1K |
|
1015
Direxion Work From Home ETF
WFH
$13.9M
| $352K | ﹤0.01% |
4,662
| – | – |
|
|
SUMO
1016
DELISTED
Sumo Logic, Inc. Common Stock
SUMO
| $352K | ﹤0.01% |
17,045
+100
| +0.6% | +$2.07K |
|
1017
Interface
TILE
$1.6B
| $351K | ﹤0.01% |
22,537
-100
| -0.4% | -$1.56K |
|
1018
eXp World Holdings
EXPI
$1.76B
| $349K | ﹤0.01% |
8,818
+1,024
| +13% | +$40.5K |
|
1019
Oceaneering
OII
$2.45B
| $349K | ﹤0.01% |
21,102
| – | – |
|
|
KSU
1020
DELISTED
Kansas City Southern
KSU
| $348K | ﹤0.01% |
1,223
-408
| -25% | -$116K |
|
1021
Kopin
KOPN
$344M
| $347K | ﹤0.01% |
43,804
+4,900
| +13% | +$38.8K |
|
1022
Retractable Technologies
RVP
$24.5M
| $345K | ﹤0.01% |
29,311
+99
| +0.3% | +$1.17K |
|
|
VNET
1023
VNET Group
VNET
$2.13B
| $345K | ﹤0.01% |
15,514
-50
| -0.3% | -$1.11K |
|
|
OTLY
1024
Oatly Group
OTLY
$513M
| $344K | ﹤0.01% |
736
+339
| +85% | +$158K |
|
1025
Invesco DB US Dollar Index Bullish Fund
UUP
$162M
| $343K | ﹤0.01% |
13,789
-1,500
| -10% | -$37.3K |
|